How severe is CVE-2020-12038?

CVE-2020-12038 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-12038 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12038?

CVE-2020-12038 primarily affects Rockwellautomation Eds Subsystem. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12038?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-12038 published?

CVE-2020-12038 was published on 2020-05-19 and last updated on 2026-06-17.

CVE-2020-12038

CVE-2020-12038 is a medium-severity vulnerability in Rockwellautomation Eds Subsystem with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Rockwellautomation Eds Subsystem
Published: 2020-05-19
Last modified: 2026-06-17

Description

Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.

Frequently asked questions

What is CVE-2020-12038?: Products that use EDS Subsystem: Version 28.0.1 and prior (FactoryTalk Linx software (Previously called RSLinx Enterprise): Versions 6.00, 6.10, and 6.11, RSLinx Classic: Version 4.11.00 and prior, RSNetWorx software: Version 28.00.00 and prior, Studio 5000 Logix Designer software: Version 32 and prior) is vulnerable. A memory corruption vulnerability exists in the algorithm that matches square brackets in the EDS subsystem. This may allow an attacker to craft specialized EDS files to crash the EDSParser COM object, leading to denial-of-service conditions.
How severe is CVE-2020-12038?: CVE-2020-12038 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-12038 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12038?: CVE-2020-12038 primarily affects Rockwellautomation Eds Subsystem. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12038?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12038 published?: CVE-2020-12038 was published on 2020-05-19 and last updated on 2026-06-17.

References

https://www.us-cert.gov/ics/advisories/icsa-20-140-01

Affected products (7)

cpe:2.3:a:rockwellautomation:eds_subsystem:*:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:rslinx:*:*:*:*:classic:*:*:*
cpe:2.3:a:rockwellautomation:rslinx_enterprise:6.00.00:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:rslinx_enterprise:6.10.00:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:rslinx_enterprise:6.11.00:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:rsnetworx:*:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:studio_5000_logix_designer:*:*:*:*:*:*:*:*

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